Example usage for com.itextpdf.text.pdf PdfReader getPageSizeWithRotation

Introduction

In this page you can find the example usage for com.itextpdf.text.pdf PdfReader getPageSizeWithRotation.

Prototype

public Rectangle getPageSizeWithRotation(final PdfDictionary page)

Source Link

Document

Gets the rotated page from a page dictionary.

Usage

From source file:spntoolsdata.pdf.util.RemoveBlankPageFromPDF.java

public static void removeBlankPdfPages(String source, String destination)
        throws IOException, DocumentException {
    PdfReader r = null;
    RandomAccessSourceFactory rasf = null;
    RandomAccessFileOrArray raf = null;//from  w  ww .j  ava2s . com
    Document document = null;
    PdfCopy writer = null;

    try {
        r = new PdfReader(source);
        // deprecated
        //    RandomAccessFileOrArray raf
        //           = new RandomAccessFileOrArray(pdfSourceFile);
        // itext 5.4.1
        rasf = new RandomAccessSourceFactory();
        raf = new RandomAccessFileOrArray(rasf.createBestSource(source));
        document = new Document(r.getPageSizeWithRotation(1));
        writer = new PdfCopy(document, new FileOutputStream(destination));
        document.open();
        PdfImportedPage page = null;

        for (int i = 1; i <= r.getNumberOfPages(); i++) {
            // first check, examine the resource dictionary for /Font or
            // /XObject keys.  If either are present -> not blank.
            PdfDictionary pageDict = r.getPageN(i);
            PdfDictionary resDict = (PdfDictionary) pageDict.get(PdfName.RESOURCES);
            boolean noFontsOrImages = true;
            if (resDict != null) {
                noFontsOrImages = resDict.get(PdfName.FONT) == null && resDict.get(PdfName.XOBJECT) == null;
            }

            if (!noFontsOrImages) {
                byte bContent[] = r.getPageContent(i, raf);
                ByteArrayOutputStream bs = new ByteArrayOutputStream();
                bs.write(bContent);

                if (bs.size() > BLANK_THRESHOLD) {
                    page = writer.getImportedPage(r, i);
                    writer.addPage(page);
                }
            }
        }
    } finally {
        if (document != null)
            document.close();
        if (writer != null)
            writer.close();
        if (raf != null)
            raf.close();
        if (r != null)
            r.close();
    }
}